Grindr and Blendr: The Danger of ‘Hook-Up’ software. I’m an optimist, a Cup Half-Full person. Blendr and Grindr tend to be apps made for people to satisfy more men or lady to meet up with people. But what happens when your underage teenage is actually flirting with somebody twice their era? By Lisa Barr There are, but two things I really hate – and topping my record is pedophiles/predators. Nowhere will they be more frequent but web, on programs, in forums, and I’m learning .